Well, here's another piece of the puzzle that should put those rumors to rest. Britney Spears just did a live cover of the hit Bonnie Raitt song "Something to Talk About," and it sounded really good. The surprise performance came during her Piece of Me residency in Las Vegas on Saturday (August 19).

Britney does use some NSFW language as she is speaking before singing the cover.

Britney's Piece of Me residency, which opened in December 2013, will close on New Year's Eve this year.